Adjustable foot rest



FIG. 1 is a perspective view of an adjustable foot rest, showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is side elevational view, the opposite side being a mirror image thereof; and

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a perspective view, showing the foot rest in an inclined position. 

The ornamental design for a adjustable foot rest, as shown and described. 